Quick Answer
Safe sleep refers to a set of evidence-based practices designed to reduce the risk of sudden infant death syndrome (SIDS) and other sleep-related infant deaths. The core guidance, summarised by the American Academy of Pediatrics (AAP), is to place babies on their back, on a firm flat surface, in their own sleep space, free from soft bedding and other hazards. These practices are among the most important things parents can do to protect their baby during the first year of life.
Why Safe Sleep Matters
SIDS and sleep-related infant deaths remain a leading cause of death in babies between 1 month and 12 months of age. The majority of these deaths occur during sleep and are associated with identifiable risk factors, many of which are preventable. Research over the past three decades has shown that following safe sleep guidelines significantly reduces the risk of sleep-related infant death. The Back to Sleep campaign, launched in the early 1990s, led to a more than 50 percent reduction in SIDS rates in the countries that adopted it.
The ABCs of Safe Sleep
The AAP summarises safe sleep with the ABCs:
- Alone: Your baby should sleep alone, without other people or pets in the sleep space
- Back: Always place your baby on their back to sleep, for every sleep, including naps. Once your baby can roll from back to front and front to back independently, you do not need to reposition them if they roll during sleep, but always start them on their back
- Crib (or other safe sleep surface): Your baby should sleep on a firm, flat surface designed for infant sleep, such as a crib, bassinet, or play yard that meets current safety standards
The Full Safe Sleep Guidelines
Sleep Position
- Always place your baby on their back to sleep, for every sleep, until 12 months
- Side sleeping is not safe for young babies as they can roll onto their front
- Tummy time is important for development but should only happen when your baby is awake and supervised, never for sleep
Sleep Surface
- Use a firm, flat mattress in a crib, bassinet, or play yard that meets current safety standards
- The mattress should fit snugly in the frame with no gaps
- Do not use inclined sleepers, bouncers, car seats (outside of travel), swings, or other non-flat surfaces for routine sleep
- Do not use sleep positioners or wedges
Sleep Environment
- Keep the sleep space completely clear: no pillows, blankets, bumpers, stuffed animals, or loose items of any kind
- Use a fitted sheet only. If warmth is needed, use a wearable blanket or sleep sack in the appropriate tog rating for the room temperature
- Keep the room at a comfortable temperature (around 16 to 20 degrees Celsius or 61 to 68 degrees Fahrenheit). Overheating is a risk factor for SIDS
- Do not cover your baby's head during sleep
Room Sharing vs. Bed Sharing
- The AAP recommends room sharing (your baby sleeps in your room, in their own sleep space) for at least the first 6 months and ideally for the first year. Room sharing is associated with a reduced risk of SIDS
- Bed sharing (sleeping in the same bed as your baby) is not recommended by the AAP as it significantly increases the risk of sleep-related death, particularly for babies under 4 months, premature babies, and babies of parents who smoke, drink alcohol, or take sedating medications
Pacifiers
- Offering a pacifier at sleep time is recommended as it is associated with a reduced risk of SIDS. For breastfed babies, wait until breastfeeding is established (around 3 to 4 weeks) before introducing a pacifier
- You do not need to replace the pacifier if it falls out during sleep
Smoking and Alcohol
- Do not smoke during pregnancy or allow smoking near your baby. Exposure to tobacco smoke is one of the strongest risk factors for SIDS
- Do not share a sleep surface with your baby if you have consumed alcohol, sedating medications, or recreational drugs, as these significantly impair your ability to respond to your baby and increase the risk of accidental suffocation
Breastfeeding
- Breastfeeding is associated with a reduced risk of SIDS. Any amount of breastfeeding is protective, with greater protection associated with longer duration and exclusivity
Common Safe Sleep Mistakes
- Allowing a baby to sleep in a car seat, bouncer, or swing outside of supervised travel or brief supervised periods
- Adding soft bedding, bumpers, or pillows to the crib for comfort
- Placing a baby on their side or front to sleep because they seem more settled that way
- Bringing a baby into the parental bed after a night feed and falling asleep together unintentionally
- Using inclined sleepers or wedges, which have been associated with infant deaths
When Safe Sleep Guidelines Can Feel Hard to Follow
Safe sleep guidelines can feel at odds with the reality of exhausted new parenthood. Babies often sleep better when held, in a swing, or in a parental bed. It is important to acknowledge this tension honestly: the guidelines exist because the risks are real, and following them consistently, even when it is difficult, is one of the most important things you can do for your baby's safety. If you are struggling with sleep deprivation, speak to your midwife, health visitor, or pediatrician about safe strategies for managing night feeds and settling.
Key Takeaway
Safe sleep means back, alone, on a firm, flat surface, in a clear sleep space, in your room for at least the first 6 months. These practices are associated with a significant reduction in SIDS and sleep-related infant death. Follow them consistently for every sleep, including naps, for the first 12 months of your baby's life.
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This article is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your pediatrician or a qualified healthcare provider with questions about your baby's health.